Squarespace is by far the easiest way to create a slick One Page website. Their templates and support are both excellent. Learn more.
One Page WordPress Theme Review
'Pulsar' is a robust parallax scrolling WordPress theme with a lot of great features. It has been specifically designed to be easily customized aimed at creatives who want to make portfolio in minutes.
If you are searching something different and out of the line, please check out Pulsar – Fully Responsive Parallax WordPress Theme.